I have a long ethernet run to a shop which unfortunately only has 3 good pairs, leaving me only able to utilize 10BaseT speeds. At one end, there is a Cudy WR3000 running near-latest OpenWRT acting as the router. At the other, there is another Cudy WR3000 (same OpenWRT version) set up as a dumb WAP. The dumb WAP and the router refuse to communicate. Both show nothing connected via ethernet. However, a laptop plugged in in place of the dumb WAP is able to get online via the router at 10 Mb/s speeds.
Is there some setting I need to set to get these 2 OpenWRT devices to connect? I have already tested connecting the dumb WAP directly to the router via a short CAT 5E cable, which worked perfectly. It instantly started serving wifi and getting clients online. So everything should be configured correctly.
The 1 GB standard has no provision to fall back on less than 4 pair cable. In other words connecting two Gb devices with 2 pair cable is not guaranteed to link at all.
Use at least one 10/100 unmanaged switch to force the link down to 100 Mb. If the cable is longer than 100 meters force the speed down to 10.
The pins have already been verified multiple times. As I said the laptop is able to connect, at only 10Mb/s. It's only the OpenWRT device that fails to connect.
Any idea on the cheapest/smallest 10/100 device I can get? I don't necessary want to add a lot of bulk at the cable endpoints. EDIT: nvm, found a couple cheap switches on ebay.
Are the devices connected via all 4 (well, 3) pairs or did you make sure to remove all other lines except 1-3 and 6?
Because some devices do really strange things when there's only one of the secondary (1+4) pairs connected.
Only 1, 2, 3, and 6 are connected. I had to re-terminate everything at both ends so it's been well verified. Then I used a cable tester to make sure there is a good connection on each conductor. Everything checks out on those 2 pairs. I will update once I've placed the 10/100 switch(es) to see if that solves it.